Month: September 2025

Description

The 3500 System provides continuous, online monitoring suitable for

machinery protection applications, and is designed to meet the

requirements of the American Petroleum Institute’s API 670 standard

for such systems. The system’s modular rack-based design includes

the following components:

l 3500/05 Instrument Rack (required)

l One or two 3500/15 Power Supplies (required)

l 3500/22M Transient Data Interface (TDI) Module (required)

l One or more 3500/XX Monitor Modules (required)

l One or more 3500/32M (4-channel) or 3500/33 (16-channel)

Relay Modules (optional)

l One or two 3500/25 Keyphasor* Modules (optional)

l One or more 3500/92 Communication Gateway Modules

(optional)

l Input/Output (I/O) Modules (required)

l 3500/94M VGA Display (optional)

l Internal or external intrinsic safety barriers, or galvanic isolators

for hazardous area installations (optional)

l 3500 System Configuration Software (required)

System components are described in more detail in the following

section and in their individual datasheets.

Description

The Accelerometer Mounting Kit protects an accelerometer from adverse physical and environmental conditions.

The mounting kit’s rugged design is both water-tight and dust resistant.

The mounting kit is available in three configurations to house various accelerometers.

All kits consist of a flat cover with a housing base, a set of three 1/4-in 20 UNC x 0.62 mounting screws with lock washers, a cable grip, an O-ring, and a gasket.

One configuration adds an optional dome cover. Another configuration adds an optional extension and an optional dome cover.

All kit designs mate with 12-mm (1/2-in) flexible or rigid conduit.

Properly installed kits, using an accelerometer mounting base and rigid or flexible conduit, meet API 670 requirements.

The conduit is ordered as an accessory. The mounting base is an accessory with the 23732, 330400 and 330425.

Prior to mounting, the machine surface where the housing will be installed must be spot faced.

An optional 303 stainless steel accelerometer mounting kit for extra protection in corrosive environments is also available.

It can be ordered under part number 164952-AA-BB.

The 3500/62 monitor: 

Continuously compares monitored parameters against configured alarm

setpoints to drive alarms for machinery protection. l

Provides essential machine information for both operations and maintenance personnel.

You can program the 3500/62 using the 3500 Rack Configuration Software to perform

either current or voltage measurements.

The 3500/62 offers I/O modules for three signal input scenarios: +/-10 Volts DC,

isolated 4-20 mA, or 4-20 mA with Intrinsically Safe zener barriers.

The Internal Barrier I/O provides external power input terminals to provide intrinsically safe power to the 4-20 mA transducers

When used in a Triple Modular Redundant (TMR) configuration, you must install 

Process Variable Monitors adjacent to each other in groups of three.

When used in this configuration, the monitor employs two types of voting to ensure

accurate operation and to avoid loss of machinery protection due to single-point failures.

Description

The 3500/62 Process Variable Monitor is a 6-channel monitor for processing

machine critical parameters that merit continuous monitoring, such as pressures,

flows, temperatures, and levels. The monitor accepts +4 to +20 mA current inputs

or any proportional voltage inputs between -10 Vdc and +10 Vdc.

It conditions these signals and compares the conditioned signals to user-programmable alarm setpoints.

Alarms

Alarm Setpoints

User can set Alert and Danger setpoints for the value measured by the monitor.

Alarms are adjustable and can normally be set from 0 to 100% of full-scale for each measured value.

The exception is when the full-scale range exceeds the range of the sensor in which

case the setpoint will be limited to the range of the sensor.

Accuracy of alarms is to within 0.13% of the desired value.

The Process Variable Monitor has both under and over alarm setpoints.

Description

The 3300 XL NSv Proximity Transducer system is intended for use with centrifugal air compressors,

refrigeration compressors, process gas compressors, and other machines with tight installation requirements. 

The 3300 XL NSv Proximity Transducer System consists of:

• a 3300 NSv probe

• a 3300 NSv extension cable

• a 3300 XL NSv Proximitor Sensor(1)

The primary uses for the 3300 XL NSv Transducer System are for areas where counter bore,

sideview, or rearview restrictions limit the use of standard Bently Nevada 3300 and 3300 XL 5 and 8 mm Transducer Systems.

It is also ideal for small target applications, such as measuring radial vibration 

on shafts smaller than 51 mm (2 in) or axial position on flat targets smaller than 15 mm (0.6 in).

It is primarily used in the following applications on fluid-filmed bearing machines where a small shaft or reduced side-view is present:

•Radial vibration and radial position measurements

• Axial (thrust) position measurements

• Tachometer and zero speed measurements

• Phase reference (Keyphasor signals)